APA (7th ed.) Citation
Harper, M. M. (2006). Wisdom of two: The spiritual and literary collaboration of George and W.B. Yeats. Oxford University Press.
Chicago Style (17th ed.) Citation
Harper, Margaret Mills. Wisdom of Two: The Spiritual and Literary Collaboration of George and W.B. Yeats. Oxford ; New York: Oxford University Press, 2006.
MLA (9th ed.) Citation
Harper, Margaret Mills. Wisdom of Two: The Spiritual and Literary Collaboration of George and W.B. Yeats. Oxford University Press, 2006.
Warning: These citations may not always be 100% accurate.